It was alleged at Wynter's trial that he had then stabbed him.
His name cropped up again last year when a hitman, Paul 'Paddlefoot' Anthony, was jailed for 18 years for attempted murder after shooting an innocent stranger in a West End nightclub, supposedly after being hired by Wynter to shoot another man.
He is believed to be buried under building works.
No one was convicted of his murder.
The police believe he has been killed.
It was suggested at the trial that Anthony had been frightened of shooting the real target because of inevitable reprisals.
The most notorious of such disappearances was that of Frank 'The Mad Axeman' Mitchell, who was helped by the Kray twins to escape from Dartmoor prison in 1966.